I heard about this band on NPR long before I actually visited Cambodia. This fueled my desire to visit the country after listening to a clip on Fresh Air stating that many Cambodian pop musicians were killed and their music ruined during the genocide in the middle to late 1970s. One of their lead singers is Cambodian and has an incredible voice.
Take a listen to one of their songs, "Tiger Calling Card"
http://www.youtube.com/watch?v=zTckGk6eBjM
Or, read about them in the NY Times:
http://www.nytimes.com/2008/01/21/arts/21iht-fever.1.9374234.html